13 Feb 2024 #21 Refueler Well-Known Member Joined 13 Sep 2008 Messages 23,963 Location Far away from hooray henrys Visit site In IMGUR ... I use the forum link to paste ... not share.
13 Feb 2024 #22 petem Well-Known Member Joined 16 May 2001 Messages 19,106 Location Cotswolds / Altea www.fairlineownersclub.com RogerJolly said: Do we know what happens at a standstill - would the speed trace still give an indication of whether the transducer’s working or not? Guessing the pulses get further and further apart ‘til were at a steady DC. Would we be expecting a steady High, so a steady Low indicates a fault? Am working with an electromagnetic log, so there’s no paddlewheel you can flick to simulate boat speed. (Hoping the picture will be visible - it wasn't until I started the reply.) Cheers Click to expand... I doubt it cares whether it's a steady high or low voltage. It's the pulses that matter. ST60's were designed to send 12v to the paddlewheel but seem to work fine with 5v.
RogerJolly said: Do we know what happens at a standstill - would the speed trace still give an indication of whether the transducer’s working or not? Guessing the pulses get further and further apart ‘til were at a steady DC. Would we be expecting a steady High, so a steady Low indicates a fault? Am working with an electromagnetic log, so there’s no paddlewheel you can flick to simulate boat speed. (Hoping the picture will be visible - it wasn't until I started the reply.) Cheers Click to expand... I doubt it cares whether it's a steady high or low voltage. It's the pulses that matter. ST60's were designed to send 12v to the paddlewheel but seem to work fine with 5v.
